1352721 has 8 divisors (see below), whose sum is σ = 1813024. Its totient is φ = 897120.

The previous prime is 1352669. The next prime is 1352749. The reversal of 1352721 is 1272531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1352721 - 2⁶ = 1352657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1352761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (226628).

2^1352721 is an apocalyptic number.

It is an amenable number.

1352721 is a deficient number, since it is larger than the sum of its proper divisors (460303).

1352721 is a wasteful number, since it uses less digits than its factorization.

1352721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its digits is 420, while the sum is 21.

The square root of 1352721 is about 1163.0653464015. The cubic root of 1352721 is about 110.5951488291.

The spelling of 1352721 in words is "one million, three hundred fifty-two thousand, seven hundred twenty-one".